We have bundled everything you need in a leveling kit for your GM 2500/3500 with high quality Cognito components. There is no guesswork, and you SAVE with the bundled price.The Cognito Ball Joint SM Series Upper Control Arms add style, function, and performance to your vehicle by correcting the ball joint angle for lifted and leveled applications and improving the allowable droop travel for a better ride quality. The control arm kit features boxed sheet metal arms that are welded, and powder coated semi-gloss black. Pre-installed maintenance free ball joints and pivot bushings are included. Heavy duty ball joints are included as well as new crush sleeves and polyurethane bushings. The Cognito Ball Joint SM Series Upper Control Arms provide ample droop travel that is required for optimal ride quality and all suspension components to last and work properly. Cognito Torsion Bar Keys allows for increased front ride height. Their forged construction makes them practically indestructible and they bolt in for easy installation.The Cognito 1-inch Block and U-Bolt Kit includes 1-inch tall powder coated semi-gloss black cast steel blocks and heavy-duty zinc plated U-bolts.The Fox 2.0 Performance Series shocks contain the latest in shock technology to transform the performance of your truck. The IFP eliminates oil aeration allowing maximum performance from the factory-tuned, precision valving. They are easy to install and provide a comfortable on-road ride and predictable off-road handling in even the toughest conditions.